Thanks for your patience Andre. I appreciate your careful, step by step
description.
I tried a couple of things based on your information and a suggestion
from Chris. I started by trying JKMount of /* to my worker and it did
work, like I expected, but it also broke all the other apps that Apache
was serving through PHP, which I expected. Christ suggested that I use
JKMount /<context>/* but not knowing exactly how that would play when
the context was ROOT I went ahead and installed the application at the
/asaap3 context so the final JKMount entry was /asaap3/* . That works!
And I understand why. All of the folders like /templates /scripts
/images /stylesheets are off of the context so now the /asaap3/ASAAP
pages have the correct url mapping. The anyhost/asaap3/ASAAP returns
the correct path to anyhost/asaap3/images/bg_hdr_logo.gif
So you can not only find the correct page, but the correct images as
well. The slightly longer URL isn't an issue. /asaap3/ASAAP vs /ASAAP
isn't a problem.
Again, thanks for the patient explanations.
Pete
André Warnier wrote:
Pete Helgren wrote:
Thanks Andre. And, I DID carefully read your original post and I had
some inkling that the problem had to do with context vs the JKMount
directive. I had concluded that Apache had difficulty serving the
images and I figured that the JKMount reference somehow was in the
middle of it. References with /ASAAP were being rendered . Those
without /ASAAP weren't rendering. What I am after is what is wrong
with the current config in Apache or Tomcat that is breaking the
references since another application works fine with that reference
structure.
In the other example I posted that DOES work, the JKMount is
/asaap3/ASAAP and the Tomcat context is asaap3 with servlet url being
/asaap3/ASAAP. Not sure why the images in that case *are* being found .
Hi again.
Considering the last phrase above, and with all due respect, I think
you still haven't really got it.
Let me try another way.
Forget that you have a Tomcat and an Apache, and consider things from
the point of view of any browser which accesses a webserver, any
webserver.
Step 1: you enter the url "http://anyhost/ASAAP";, and the browser in
return receives a html page.
Now, for the browser, "http://anyhost/ASAAP"; *is* the place it got
this page from, and it is his "baseline" for this page.
That is true no matter which "aliases", front-ends, back-ends, dynamic
of static mechanisms have participated on the server side in producing
that page in reality. The browser doesn't know that. It knows only
that it asked for "http://anyhost/ASAAP";, and it got this page in return.
Step 2: in the received page, the browser finds a link to
"images/myimage.gif". In the absence of any other information, the
browser is going to request that item, from the same server, by doing
the following :
- it removes the last element of the URL (in this case
"http://anyhost/ASAAP";) from which it received the current page.
In this case thus, it removes the "ASAAP", leaving "http://anyhost/";.
- then it adds the relative link to that. So it concatenates
"http://anyhost/"; with "images/myimage.gif", giving
"http://anyhost/images/myimage.gif";.
- then it requests that URL
Now the above is true for any browser, talking to any server, and
there is nothing you can do about it. No amount of server
configuration is going to chane the logic above, since it is the
inherent logic of a browser.
So it will be so as long as :
a) either you modify the links in your pages so that they re-introduce
this element "ASAAP/" that is stripped by the above operation
b) or you find a way to make the browser "believe" that it did not get
the first page above from "http://anyhost/ASAAP";, but from (for
instance) "http://anyhost/ASAAP/index.html";.
Since (for good reasons, I agree with your reasons) you do not want to
modify the references in your pages (a), then you must find a way to
do (b).
Here is one way :
When the browser requests the URL "http://anyhost/ASAAP";, it should be
told "that page does not exist (or has moved), please request
"http://anyhost/ASAAP/index.jsp"; instead. Then the browser will do
that, and request "http://anyhost/ASAAP/index.jsp";, and receive the
original page.
Now the browser knows that this page has been received from
"http://anyhost/ASAAP/index.jsp";. So when it finds a relative link in
that page, it is going to follow the same steps as above, but this
time what it will remove will be the "index.jsp" at the end, and what
will be left before adding the relative link will be
"http://anyhost/ASAAP/";.
So now it will request "http://anyhost/ASAAP/images/myimage.gif"; and
bingo ! that is what your JkMount says to redirect to Tomcat, and
bingo again ! Tomcat knows where that is (hopefully) and can return
it.(*)
So you need, either at the Apache or at the Tomcat level, to make sure
that in case someone requests "http://yourhost/ASAAP";, his browser
gets a "redirect" response pointing to
""http://yourhost/ASAAP/index.jsp"; for example.
There are probably other possibilities based on a change of your
application directory structure and/or mappings in Tomcat. But I
cannot help you there, because I don't know what your Tomcat setup
really is. Since trying the link
"http://altusschools.k12.ok.us/ASAAP/"; (with a trailing "/") returns a
/Tomcat/ 404 error, I guess that at this moment you have not "mapped"
the URL "/ASAAP/" to your webapp. Maybe you should.
Can you give us the exact directory structure below the /webapps/
directory in your Tomcat ? It would help to know where the images and
stylesheets really are with relation to the ROOT and ASAAP
subdirectories.
(*) Note that from the look of it, Tomcat does not know where the URL
"http://yourhost/ASAAP/images/myimage.gif"; is, and that is a problem.
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![http://anyhost/images/myimage.gif"](http://anyhost/images/myimage.gif"){kind=link}
![http://anyhost/ASAAP/images/myimage.gif"](http://anyhost/ASAAP/images/myimage.gif"){kind=link}
![http://yourhost/ASAAP/images/myimage.gif"](http://yourhost/ASAAP/images/myimage.gif"){kind=link}